Answer:
d = 5,35 ft
Step-by-step explanation: See annex
Figure in annex is clear,
sin ∠42⁰ = d / 8
And
sin ∠42⁰ = 0.669
d/8 = 0,669
d = 0,669*8
d = 5,35 ft
1. Definition of bisector
2. ASA congruence theorem or ASA Postulate
E = 3(6^2)
E = 3(36)
And your answer is E = 108 :)